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Sightings — DCA75 Workbench

Sightings is a free companion app for the Peak Atlas DCA75 (DCA Pro) semiconductor analyzer. It connects over USB, runs identify tests and curve sweeps, and keeps every reading in a local database so parts can be compared, binned and matched.

Platforms: macOS, Linux (x86‑64, Flatpak or tarball), Android (phones and tablets with USB host).

Start here

1. Installation — macOS, Linux, Android
2. First steps — connect, identify, drafts, tagging
3. Curves — the five sweeps and the leakage sweep
4. DCA55‑equivalent and leakage measurements
5. Parts, bins and matching
6. Pedal Builder — which circuits and positions a part is valid for
7. Troubleshooting
8. Data, backup and export
9. Building from source

No DCA75 yet?

Turn on Demo device in Settings to try everything against a simulated unit built from real measurements. See First steps.

Downloads

Ready‑made builds are on the Releases page.

Support the project

Sightings is free. If you find it helpful, consider buying me a coffee.

Safety

Sightings never writes to the unit's firmware, calibration or serial number; those commands cannot even be constructed in its protocol library. Every error path returns the unit to its leads‑safe state.

Not affiliated with Peak Electronic Design Ltd. Peak Atlas, DCA Pro and DCA75 are their trademarks.